CVE-2026-84830
Authenticated admin command injection in SEPPmail SEG (<15.0.7) allows elevated OS command execution
Is CVE-2026-84830 being exploited?
Not confirmed. CVE-2026-84830 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-84830?
CVE-2026-84830 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-84830?
Yes. A fix has been recorded for CVE-2026-84830. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-84830 affect?
CVE-2026-84830 affects SEPPmail Secure Email Gateway <15.0.7. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-84830?
Upgrade to 15.0.7, restrict admin access, rotate credentials, and review logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated administrator can execute arbitrary OS commands with elevated privileges, enabling full device takeover, data access, and lateral movement.
Patch when possible
- affected< 15.0.7
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.